Medium large transport receives TCASII RA while on a visual approach. Executes go around.

Attributes
ACN	233076
Time
Date	199302
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : ord
State Reference	IL
Altitude	msl bound lower : 2000 msl bound upper : 2000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : ord
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	descent : approach
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Aircraft
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 14700 flight time type : 900
ASRS Report	233076
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 11000 flight time type : 1000
ASRS Report	232912
Events
Anomaly	conflict : airborne less severe
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : took evasive action other
Consequence	Other
Miss Distance	horizontal : 2000 vertical : 600
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

On visual approach to 27L with landing clearance ,TCASII gave RA to climb. I could not see target that tower was now advising us of, so I initiated a go around. Once the go around was started, we saw the target, but it was too late to continue the approach.

Original NASA ASRS Text

Title: MLG RECEIVES TCASII RA WHILE ON A VISUAL APCH. EXECUTES GAR.

Narrative: ON VISUAL APCH TO 27L WITH LNDG CLRNC ,TCASII GAVE RA TO CLB. I COULD NOT SEE TARGET THAT TWR WAS NOW ADVISING US OF, SO I INITIATED A GAR. ONCE THE GAR WAS STARTED, WE SAW THE TARGET, BUT IT WAS TOO LATE TO CONTINUE THE APCH.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.